Author: Freesciencelessons via YouTube
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In this video, we look at gas exchange in insects. First we look at why larger organisms such as insects require a specialised gas exchange system. We then explore the structure of the insect gas exchange system, including the tracheae, tracheoles and spiracles. Finally, we look at how some insects have evolved mechanisms to increase the rate of gas exchange.

Image credits:

Amoeba
https://commons.wikimedia.org/wiki/File:Amoeba_proteus_another_form.jpg
SmallRex, CC BY-SA 4.0 https://creativecommons.org/licenses/by-sa/4.0, via Wikimedia Commons

Mouse
https://commons.wikimedia.org/wiki/File:Animal_mammal_mouse_log_NPS_Photo_(17114740418).jpg
Olympic National Park, Public domain, via Wikimedia Commons

Insect
https://commons.wikimedia.org/wiki/File:Azuragrion_nigridorsum_2016_10_08_12_08_22_5631.jpg
Alandmanson, CC BY-SA 4.0 https://creativecommons.org/licenses/by-sa/4.0, via Wikimedia Commons

Bee
https://commons.wikimedia.org/wiki/File:Bee19992_anthid_red,_m,_kenya,_angle_2014-08-09-14.36.59_ZS_PMax_(15604222151).jpg
USGS Bee Inventory and Monitoring Lab from Beltsville, Maryland, USA, Public domain, via Wikimedia Commons

Spiracles

https://commons.wikimedia.org/wiki/File:Flickr_-_ggallice_-_Spiracles.jpg
Geoff Gallice from Gainesville, FL, USA, CC BY 2.0 https://creativecommons.org/licenses/by/2.0, via Wikimedia Commons

Hornet
https://commons.wikimedia.org/wiki/File:Vespa_crabro09(js),_Lodz(Poland).jpg
Jerzy Strzelecki, CC BY-SA 3.0 https://creativecommons.org/licenses/by-sa/3.0, via Wikimedia Commons

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